the fbi is excavating and abandoned well. agents started digging there on information they got from shermanteen. he is one of the so-called speed freak killers. he led investigators to the remains of four women last year. this time, he says he never told federal agents this well is one of his disposal spots. >>> sonia sotomayor, one of the nine justices on the u.s. supreme court was signing her new book in san francisco today. rita williams says the book shows the human side of the high court justice and how she overcame difficulties. >> reporter: not the kind of welcome you would expect from a supreme court justice. but this one, sonia sotomayor is different. the first latino, and third woman on the court has just written a book not about her legal been, but about herself. >> to be as open and candid as i've been in this book made may very vulnerable to people's criticisms. >> reporter: she spoke about her infant father's death from alcoholism. affirmative action that led to princeton, then harvard law. >> yes, i needed help